Finishing Oil Calculator

How much oil do I need?

No need to crunch numbers! Our handy oil calculator will help you figure out how much you need! To get started, enter the dimensions of the surface(s) you’re finishing (in feet).

For example, to finish two rooms you would add the width and length of each floor. Enter a single floor dimension, click “add area”, then enter the next floor dimension and watch the math take place.

Enter the dimensions of each surface area

Add each surface area you’re finishing i.e. floor, walls, etc
ft wide
ft long
plus1 Add Area minus1 Remove Area

How Much Finishing Oil You'll Need

This calculator estimates how much oil you’ll need. The commonly recommended amount of coats for adequate protection and saturation is between 3 and 5. However, your project may absorb more or less oil as there are many variables for each project. This is intended for estimation purposes only. This calculator estimates results and coverage per gallon may vary depending on factors like species of wood, age of wood, protection needed, etc.

sq/ft
8oz
8oz
16oz
16oz
32oz
32oz
Gallons
Gallons

Estimated Coverage per Coats:
400 sq. ft. per gallon/128oz
100 sq. ft. per  32oz
50 sq. ft. per 16oz
25 sq. ft. per 8oz

Most surfaces require Pure Tung Oil or Dark Tung Oil to be thinned. Our Half & Half, Dark Half, and Outdoor Defense Oil are pre-thinned options. Hemp Oil does not need thinning. If you do choose to thin the oil yourself at a 50/50 ratio, simply take the estimate in gallons above and divide it in half. One half will be the amount of oil needed and the other half will be solvent.
For example, if the calculator says you need 4 gallons, but you wish to thin it yourself. Then we recommend purchasing 2 gallons of the Pure or Dark Tung Oil and purchasing 2 gallons of a solvent or thinner like Citrus Solvent or Odorless Mineral Spirits.